421243675 has 24 divisors (see below), whose sum is σ = 534809520. Its totient is φ = 329049600.

The previous prime is 421243649. The next prime is 421243679. The reversal of 421243675 is 576342124.

It is not a de Polignac number, because 421243675 - 2¹¹ = 421241627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421243675.

It is not an unprimeable number, because it can be changed into a prime (421243679) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 183535 + ... + 185815.

It is an arithmetic number, because the mean of its divisors is an integer number (22283730).

Almost surely, 2^421243675 is an apocalyptic number.

421243675 is a deficient number, since it is larger than the sum of its proper divisors (113565845).

421243675 is a wasteful number, since it uses less digits than its factorization.

421243675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2463 (or 2458 counting only the distinct ones).

The product of its digits is 40320, while the sum is 34.

The square root of 421243675 is about 20524.2216661193. The cubic root of 421243675 is about 749.6256947066.

Adding to 421243675 its reverse (576342124), we get a palindrome (997585799).

The spelling of 421243675 in words is "four hundred twenty-one million, two hundred forty-three thousand, six hundred seventy-five".